Gather all ingredients and chop vegetables into bite-sized pieces.
Heat vegetable oil in a wok over medium-high heat.
Add garlic and ginger, stirring quickly until fragrant.
Introduce the chicken slices and stir-fry until browned.
Add the mixed vegetables and stir-fry for about 5 minutes.
Pour in soy sauce and oyster sauce, mixing well.
Continue to cook for another 3-5 minutes, ensuring everything is well-coated.
Add sesame oil for extra flavor and stir well.
Garnish with chopped green onions and serve hot.
Enjoy your homemade Chinese dish with steamed rice or noodles!